National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Mostly Cloudy

61°F

16°C

Humidity 58%
Wind Speed E 5 mph
Barometer 30.24 in (1024.0 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 21 May 2:56 pm EDT
Extended Forecast for

2 Miles SW Grant Mills NY

Frost Advisory May 21, 11:00pm until May 22, 08:00am
Click here for hazard details and duration
Frost Advisory

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 60. North wind around 5 mph.

    High: 60 °F

    Mostly Cloudy

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 38. Light northeast wind.

    Low: 38 °F

    Decreasing
    Clouds

  • Friday

    Friday: Partly sunny, with a high near 64. East wind around 5 mph.

    High: 64 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41. Light southeast wind.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Showers. High near 50. Southeast wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    High: 50 °F

    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 38. Chance of precipitation is 100%.

    Low: 38 °F

    Showers

  • Sunday

    Sunday: Showers before 2pm. High near 55. Chance of precipitation is 80%.

    High: 55 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers after 2am. Cloudy, with a low around 46. Chance of precipitation is 40%.

    Low: 46 °F

    Cloudy then
    Chance
    Showers

  • Memorial Day

    Memorial Day: A chance of showers. Mostly cloudy, with a high near 66. Chance of precipitation is 40%.

    High: 66 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 60. North wind around 5 mph.
Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 38. Light northeast wind.
Friday
Partly sunny, with a high near 64. East wind around 5 mph.
Friday Night
Mostly cloudy, with a low around 41. Light southeast wind.
Saturday
Showers. High near 50. Southeast wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Saturday Night
Showers. Low around 38. Chance of precipitation is 100%.
Sunday
Showers before 2pm. High near 55. Chance of precipitation is 80%.
Sunday Night
A chance of showers after 2am. Cloudy, with a low around 46. Chance of precipitation is 40%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 66. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 49.
Tuesday
Partly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Grant Mills NY
 42.06°N 74.71°W (Elev. 2201 ft)
Last Update:
2:30 pm EDT May 21, 2026
Forecast Valid:
3pm EDT May 21, 2026-6pm EDT May 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation